package engine

import "errors"

var (
	// ErrNoAvailableBackend 无可用后端错误
	ErrNoAvailableBackend = errors.New("no available backend")

	// ErrConnectionClosed 连接已关闭错误
	ErrConnectionClosed = errors.New("connection closed")

	// ErrRequestTimeout 请求超时错误
	ErrRequestTimeout = errors.New("request timeout")

	// ErrInvalidRequest 无效请求错误
	ErrInvalidRequest = errors.New("invalid request")

	// ErrBackendUnhealthy 后端不健康错误
	ErrBackendUnhealthy = errors.New("backend unhealthy")
)
